I've seen this manifest itself in two ways on my Xubuntu 12.04.1 installation after a boot, and login to XFCE.
The first is as described in this bug where the VPN connection isn't listed on the "VPN Connections" branch of the menu. The second is when clicking the network-manager icon in the notification area, the "Wired Network", "Wireless Networks", and "VPN Connections" are completely missing, leaving only "(checked) Enable Networking", "(unchecked) Enable Wireless", "Connection Information", and "Edit Connections..." Using workaround in comment #19, everything goes back to normal, menu appears as it should with all items visible. Command is: sudo /etc/init.d/network-manager restart -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager-pptp in Ubuntu. https://bugs.launchpad.net/bugs/113270 Title: Created PPTP connection does not appear in VPN connect menu Status in “network-manager-pptp” package in Ubuntu: Incomplete Bug description: Binary package hint: network-manager-pptp Fresh sinstalled Ubuntu Feisty. downloaded and installed network-manger-pptp and network-manager-vpnc. Now when I create PPTP connection it does not appear in NetworkManager VPN connect menu. I can view and edit newconnection in VPN Configure dialog, but can't connect. VPNC connections does not produce such behaviour. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-pptp/+bug/113270/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

